The Aqua Medic Titanium Heater PRO is a powerful, unregulated titanium heater designed for large aquariums with a volume of up to 9,000 liters. Engineered for professional use in both freshwater and marine environments, it offers outstanding durability and reliability. Its high-quality, corrosion-resistant titanium housing makes it especially suitable for saltwater aquariums. The heater is unbreakable and built to last, making it ideal for demanding applications. Aqua Medic Titanium Heater PRO+ available in three power levels: 1000 W, 2000 W, and 3000 W+ suitable for aquariums up to 3,000 liters+ durable titanium housing - perfect for saltwater use+ unregulated heating element - requires external temperature controller+ with run-dry protection+ low maintenance, highly reliable Note: The Titanium Heater PRO does not include an internal thermostat and must be used with an external temperature controller (not included). Aqua Medic Titanium Heater PRO 1000 Wfor aquariums from 2,000 - 3,000